Fastly (NYSE: FSLY) investor to sell 852 shares after $926K August trade

Rhea-AI Filing Summary

Fastly, Inc. (FSLY) received a Rule 144 notice from stockholder Artur Bergman covering a proposed sale of 852 shares of Fastly Class A common stock through E*TRADE Securities LLC on or about August 27, 2026 on Nasdaq. The filing lists an aggregate market value for the proposed sale of $20,158, with 159,289,012 shares of this class outstanding.

The notice also details prior open-market sales of Fastly Class A common stock by Artur Bergman during the past three months, including multiple transactions in May, June, and August 2026, with share amounts and dollar proceeds disclosed for each trade. The form is signed by Tara Seracka as Attorney-in-Fact for Artur Bergman.

Key Figures

Shares proposed to be sold: 852 shares Aggregate market value of proposed sale: $20,158 Shares outstanding: 159,289,012 shares +4 more

7 metrics

Shares proposed to be sold 852 shares Class A common stock under Rule 144 notice

Aggregate market value of proposed sale $20,158 Planned sale of 852 shares through E*TRADE Securities LLC

Shares outstanding 159,289,012 shares Outstanding Class A common stock referenced in the notice

Sale on August 18, 2026 32,387 shares; $926,268.20 Class A common stock sold by Artur Bergman

Sale on August 19, 2026 16,435 shares; $410,546.30 Class A common stock sold by Artur Bergman

Sale on May 29, 2026 6,225 shares; $105,576.00 Class A common stock sold by Artur Bergman

Sale on June 3, 2026 6,689 shares; $141,338.57 Class A common stock sold by Artur Bergman

Key Terms

Rule 144, restricted, aggregate market value, Attorney-in-Fact

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted regulatory

"COMMON | 08/26/2026 | RESTRICTED | FASTLY, INC."

aggregate market value financial

"COMMON | ... | 852 | 20158 | 159289012 | 08/27/2026"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

Attorney-in-Fact regulatory

"Signature | /s/ Tara Seracka, Attorney-in-Fact for Artur Bergman"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does this Form 144 filing mean for Fastly, Inc. (FSLY)?

The filing gives notice that stockholder Artur Bergman intends to sell 852 shares of Fastly Class A common stock under Rule 144. It is a required disclosure of a potential sale and does not itself change Fastly’s capital structure.

How many FSLY shares are covered by the new Rule 144 notice?

The notice covers a proposed sale of 852 shares of Fastly Class A common stock, with an indicated aggregate market value of $20,158, to be sold through E*TRADE Securities LLC on or about August 27, 2026.

How many Fastly (FSLY) shares are outstanding according to this filing?

The filing reports that there are 159,289,012 shares of the relevant class of Fastly, Inc. common stock outstanding. This figure provides context for the relative size of the 852-share proposed sale.

What recent FSLY stock sales by Artur Bergman are disclosed?

The notice lists several past three-month sales, including 32,387 shares sold on August 18, 2026 for $926,268.20 and multiple trades on August 19, 2026 such as 16,435 shares for $410,546.30, plus earlier May and June 2026 transactions.

Who signed the Fastly (FSLY) Form 144 and in what capacity?

The Form 144 is signed “/s/ Tara Seracka, Attorney-in-Fact for Artur Bergman” dated August 24, 2026, indicating Tara Seracka is acting under a power of attorney on behalf of the selling stockholder.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/24/2026 - 05:48 PM Accepted by SEC EDGAR 08/24/2026 - 05:48 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001769490
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Fastly, Inc.
SEC File Number
Address of Issuer	475 Brannan Street Suite 300 San Francisco CALIFORNIA 94107
Phone	8444327859
Name of Person for Whose Account the Securities are To Be Sold	Artur Bergman
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
COMMON	E*TRADE SECURITIES LLC. 4005 Windward Plaza Dr. Alpharetta GA 30005	852	20158	159289012	08/27/2026	Nasdaq

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
COMMON	08/26/2026	RESTRICTED	FASTLY, INC.			852	08/26/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	05/27/2026	852	14910
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	05/28/2026	1077	18330.54
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	05/29/2026	6225	105576
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	06/03/2026	1100	21824
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	06/03/2026	6689	141338.57
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	06/03/2026	100	2183
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	08/18/2026	32387	926268.2
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	08/19/2026	11088	265446.72
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	08/19/2026	16435	410546.3
Artur Bergman 475 Brannan Street, Suite 300 San Francisco CA 94107	Class A Common Stock	08/19/2026	4164	107347.92

144: Remarks and Signature

Remarks
Date of Notice	08/24/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Tara Seracka, Attorney-in-Fact for Artur Bergman
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)